- var_dump: documentation ( source)
- array_combine: documentation ( source)
- serialize: documentation ( source)
- preg_replace: documentation ( source)
<?php
$array1 = ['今日', '天気', '晴れ', '雨'];
$array2 = ['の', 'は', 'のち', 'です'];
$a = array_combine($array1, $array2);
$b = serialize($a);
$c = preg_replace('|[:print:]|', '', $b);
var_dump($c,$b, $a);